When I plug power cord, my non-working SR1530CL is turning on single fan on the power unit (second one seems to be failed), turn on green status light, then turn it off, then turn it on with amber LED and then green LED is lighting, and amber LED is flashing 4 times, then only green LED continue to shine. No other leds including power are shining. When I eject RAM or CPU power plug, absolutely the same thing happens.

That's pretty confusing because in the guide blinking amber LED is described as showing non-critical problems, i. e. I should be able to boot system. Any idea what exactly 4 blinks means? Do I need to buy new power unit or it's better to put the whole thing into trash because of motherboard failure?

Backpane and front panel status LEDs are blinking synchronized. Power button does nothing even when I press it for several seconds, but before failure this server had auto power-on setup, maybe it still takes effect. Fan on the power unit starts rotation when I plug power cord; in several seconds green status light turns on and flash one time; then it turns on permanently and amber LED is flashing four times; then amber turns off and green remain to shine.

The LED on the motherboard beside the 4 post LEDs flashes 3 times amber then stayed green. I have attempted to remove the RAM etc. I don't see any of the POST LEDs light up or hear any beeps. Did you have any luck finding out what the problem was?